1959

8.1

2001

5.2

1983

6.6

1970

7.6

1998

7.3

1992

6.1

1916

6.6

1970

3.8

1993

2.0

1969

7.1

2005

5.7

2008

5.4

1985

7.2

2005

6.1

1966

6.0

1971

0.0

2016

4.5

1978

6.5

2008

5.2

1992

6.6